tremblay and j



G. TREMBLAY AND J. N. DUI-OUR. DUST SEPARATOR. APPLICATION FILED' JAN. :5, 191a, RENEWED APR. 1,1919.

1,304,123. I Patented'May 20, 1919.

2 SHEET$-$HEET I I 3 r i 4 'IIIIIII'IIII(III) .vnHRIs PETERS co. micro-Luna, wAsmm-mu, n. c.

G. TREMBLAYAND J. N. DUFOUR.

DUST SEPARATOR.

APPLICATION FILED JAN.15. 1918'. RENEWED APR.- 1. 1919.

Patented May 20, 1919.

2 SHEETS-SHEET 2.

f. Z i as J0 (Meme/ 5 UNITED STATES PATENT OFFICE.

GEORGE TREMBLAY AND JOSEPH N. DULFOUR, OF CHICOUTIMI, QUEBEC, CANADA.

nUsr-sEPARAToR.

Application filed J'anuary 15, .1918, Serial No. 211,901.

To all whom it may concern: 7

Be it lmown that we, GEORGE TREMBLAY and JOSEPH NAPOLEON DUFoUR, both subjects of the King of Great Britain, residing at Chicoutimi, Province of Quebec, Canada,

3 have invented certain new and useful Improvements in Dust-Separators; and we do hereby declare that the following is a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. I

The present invention relates to threshing machines and more particularly to a dust separator which collects and separates the grain as it is passing into the dust from the thresher.

An object of the present invention is to provide a device of this character which may be easily and readily applied to an ordinary threshing machine and connected thereto without the use of additional operating means.

With the above and other objects in view which will hereinafter appear as the description continues, the invention consists of the novel features of construction, combination and formation of parts as will be herein after more fully described and particularly pointed out in the appended claim.

In the accompanying drawings has been shown a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details herein exhibited, but the right is hereby reserved to any changes, alterations or modifications to which recourse maybe had that come within the scope of the claim without departing from the spirit of the invention or sacrificing the efiiciency of the same.

In the accompanying drawings:

Figure 1 is a detail view of an ordinary threshing machine showing the invention applied thereto in side elevation;

Fig. 2' is a front elevation of the separator;

Fig. 3 is a rear end elevation having a portion thereof in section; and,

Fig. 4 is a horizontal sectional view.

Referring now more particularly to the accompanying drawings wherein like and corresponding parts are designated by similar reference characters throughout the several views.

Specification of Letters Patent.

Patented May 20, 1919. Renewed. April 7, 1919. Serial No. 288,225.

ent invention which comprises a base portion 4.

Arranged upon thisbase 4 is a casing 5 and communicating;- with this casing 5 is a conveying tube 6'having an inlet nozzle 7 and this nozzle projects over the conveyer 2 adjacent the inlet opening of the threshing machine. The casing'hconsists oftwo sections indicated by the numerals 17 and 17 and arranged within the lower ends of each of these sections is a fan 8. These fans are mounted upon a driven shaft 9 and this driven shaft carries a pulley 10 which is connected to the pulley 3 by means of the belt 11, so that when the conveyer is set into operation the shaft 9 will be rotated through its connections to the pulley 3. The inner end of the conveyer 6 terminates between the sections 17 and 17 and communicates with each of these sections through the openings 12. Arranged on the outer side of each of the sections 17 and 17 are the inlet passageways 13. The lower ends of these inlet passageways 13 terminate within the base 4 and their upper ends communicate with. the sections 17 and 17 adjacent the hubs of the fans 8. Supported upon the base 4 at the medial portion thereof is an air inlet passageway 14 and this latter communicates with the inner end of I the conveying tube 6 by means of the opening 15. Slidably mounted within the inner end of the conveying tube 6 is a door 15 which is adapted to close the opening 15' so as to disconnect the passageway 14 with the inner end of the conveying tube 6.

From the foregoing it will be obvious that when the fans are set in motion they will create a suction within the sections 17 and 17 and as the conveying tube 6 is open they will draw the dust from the grain as it passes beneath the inlet end 7 of the conveying tube upon the conveyer belt 2-. This dust is drawn through the conveying tube 6, then through the sections 17 and 17 and finally exhausts through the outlet opening 16. This outlet opening 16 may have connected thereto a suitable tubing for conas it is fed into the 12 and veying the dust from the machine. The air inlet passageways 13 are at all times opened so that air will be drawn into the sections 17 and 17 through these air inlet openings,

'thereby preventing too great a suction from being set up in the conveying tube 6, as if a very strong suction is set up within this conveying] tube 6 the grain as well as the dust will be drawn from the conveying belt 2. When the fans are rotating at a very great speed it is necessary to open the air inlet passageway 14: so as to reduce the suction power of the fans. When the door 15 has been moved to the position as shown in dotted lines in Fig. 4, the opening 15 will be opened so that atmospheric air may pass through the air inlet 14 through this opening 15, then through the openings finally through the sections 17 and 17. By moving the door 15 to the position as shown in full lines in Fig. 1 the inlet opening 15 will be closed. The slidable doors 18 are arranged. at the lower end of Copies of this patent may be obtained for each of the casings 13 so as to close these air inlet openings when desired.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent is:

A dust separator for threshing machines comprising a base portion, a casing supported thereupon, said casing comprising. two sections, said sections communicating with a single outlet opening, a fan operatively mounted within each of said sections, a conveying tube, the inner end of said conveying tube mounted between said sections and communicating therewith, a closure controlled inlet opening arranged within the inner end of said conveying tube, and an air inlet passageway communicating with each of said sections adjacent said fans substan tially as and for the purpose specified.

In witness whereof We have hereunto set our hands.

GEORGE TREMBLAY. J. N. DUFOUR.

five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

